ACUS11 KWNS 300441
SWOMCD
SPC MCD 300441=20
IAZ000-NEZ000-300645-

Mesoscale Discussion 1736
NWS Storm Prediction Center Norman OK
1141 PM CDT Mon Jul 29 2024

Areas affected...parts of northwest/west central Iowa and adjacent
northeastern Nebraska

Concerning...Severe Thunderstorm Watch 563...

Valid 300441Z - 300645Z

The severe weather threat for Severe Thunderstorm Watch 563
continues.

SUMMARY...A compact, but well-organized cluster of storms is being
maintained across the Sioux City area, and it possible that this
activity may continue to pose a risk for strong to severe wind gusts
for at least a few more hours.

DISCUSSION...Despite the presence of strong lower/mid-tropospheric
inhibition, convection has become better organized in a compact
cluster now propagating across and east-southeast of the Sioux City
area. The associated surface cold pool included 2 hourly pressure
rises of 5.7 mb at Yankton during the 04Z obs, and a small MCV has
become well-defined. Given the 40 kt forward propagation of this
cluster, strong low-level inflow of moist boundary-layer air
characterized by CAPE in excess in excess of 2000 J/kg might still
continue to overcome the mid-level inhibition at least a few more
hours.

..Kerr.. 07/30/2024

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!90Wf93Yb1AGkV5HVwSygcmkAPB9tuv_b3b3n6Usp15t8nh5O5U7emls-hRnfs7ShARoF2AaDJ= e52FL405M151c7OlkM$ for graphic product...

ATTN...WFO...DMX...FSD...OAX...

LAT...LON 43129630 42539457 41559404 41439495 41919624 42109669
42229636 43129630=20


=3D =3D =3D
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